Error:

Server Error in '/' Application.

Parameter is not valid.

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.ArgumentException: Parameter is not valid.

Source Error:

Line 67: 
Line 68:                 var mediaImage = Media.MakeNew(fileName, fileMediaType, user, folder.Id);
Line 69: mediaImage.getProperty("umbracoFile").Value = file; Line 70:             }
Line 71:             

Source File: C:\My VS Project\umbraco4-clean\Training.Level2-Clean\Training.Level2\usercontrols\CommentForm.ascx.cs    Line: 69

Stack Trace:

[ArgumentException: Parameter is not valid.]
   System.Drawing.Image.FromStream(Stream stream, Boolean useEmbeddedColorManagement, Boolean validateImageData) +1157767
   System.Drawing.Image.FromStream(Stream stream) +8
   umbraco.cms.businesslogic.Files.UmbracoFile.GetDimensions() +103
   umbraco.cms.businesslogic.Files.UmbracoFile.Resize(Int32 maxWidthHeight, String fileNameAddition) +54
   umbraco.cms.businesslogic.datatype.FileHandlerData.set_Value(Object value) +921
   umbraco.cms.businesslogic.property.Property.set_Value(Object value) +40
   Training.Level2.usercontrols.CommentForm.postStatus(Object sender, EventArgs e) in C:\My VS Project\umbraco4-clean\Training.Level2-Clean\Training.Level2\usercontrols\CommentForm.ascx.cs:69
   System.Web.UI.WebControls.Button.OnClick(EventArgs e) +118
   System.Web.UI.WebControls.Button.RaisePostBackEvent(String eventArgument) +112
   System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) +10
   System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +13
   System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +36
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +5563

Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.0.30319.272

Code:  i am using is ....

             for (int i = 0; i < Request.Files.Count; i++)
            {
                HttpPostedFile file = Request.Files[i];

                var fileType = DocumentType.GetByAlias("StatusUpdateFile");
                var fileName = "File-" + DateTime.Now.Ticks.ToString();

                var statusFile = Document.MakeNew(fileName, fileType, user, d.Id);
                statusFile.getProperty("upload").Value = file;

                statusFile.Publish(user);

                umbraco.library.UpdateDocumentCache(statusFile.Id);
            }

            // adding images to media folder

            var mt = MediaType.GetByAlias("Folder");
            var folder = Media.MakeNew(name, mt, user, -1);

            for (int i = 0; i < Request.Files.Count; i++)
            {
                HttpPostedFile file = Request.Files[i];

                var fileMediaType = MediaType.GetByAlias("File");
                var fileName = "File-" + DateTime.Now.Ticks.ToString();

                var mediaImage = Media.MakeNew(fileName, fileMediaType, user, folder.Id);
                mediaImage.getProperty("umbracoFile").Value = file;
            }

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